Tong line block



FIG. 1 is a perspective view of the tong line block.

FIG. 2 is a left side view.

FIG. 3 is a right side view.

FIG. 4 is a top view, the bottom view being a mirror image.

FIG. 5 is a front view; and,

FIG. 6 is a rear view.

The broken line showing on FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a tong line block, as shown and described. 